. >> millions of people are with us, in helping to share our burden of grief at this moment. >> reporter: a sunday vigil to help heal. in all, 12 are among the dead. a 6-year-old girl, a navy sailor. an air force reservist and two young men who died shielding their girlfriends from bullets. fathers, sons, daughters, each with lives cut short. the president addressed a grieving community and talked privately with families of the victims. >> my main task was to serve as a representative of the entire country and let them know, that we are thinking about them at this moment and will continue to think about them each and every day. >> reporter: the suspect, 24-year-old james holmes, today will be adviseded of his rights and the judge will set a date for the formal filing of charges. the start of a legal process that may take months. >> we will convict him. yes. >> reporter: at issue, whether the prosecutor will seek the death penalty. the defense will likely argue whether holmes is mentally competent. while the city is forever changed. evidence will include what w found inside the suspect's